Exhaust question. 2009 wrx sti 330s
 

Right i have a 330s. 2009 WRX STI

They come as standard with a Pro-drive cat back system.

i want to replace everything before this..

so will i need, down pipe de cat pipe, and 2nd de cat link pipe ?



Thank you.

Or does the 330s only have one cat with it having the pro drive system ?